Gasoline engine



FIG. 1 is a front perspective view of a gasoline engine showing our newdesign;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a left side perspective view thereof;

FIG. 4 is a right side perspective view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a front top perspective view thereof.

In the drawings, the broken lines depict environmental subject matteronly and form no part of the claimed design.

The ornamental design for a gasoline engine, as shown and described. 